Malicious PDF — malware analysis report

Static analysis result for SHA-256 61b3240aea22a89b…

MALICIOUS

PDF

75.1 KB Created: 2021-03-04 17:01:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f815cf229bca9f64b4c7a8d01266edbb SHA-1: 6bd02bb0c0c203ec5781a8e2e4a2a829db9e2554 SHA-256: 61b3240aea22a89bd2021b276d81535b16286ffc222352a99adbecf643dbcaba
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://nipisod.ru/award?keyword=ultimate+frisbee+equipment+uk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482863/normal_5fefceeda4291.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/je6YhdQ/ascend_math_flash_cards_multiplication.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454820/normal_603ea75e702dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451760/normal_5ff01539aa6e5.pdfIn PDF document text
    • http://zaxevef.getenjoyment.net/22390495134.pdfIn PDF document text
    • http://tomolijoponix.mypressonline.com/40653626704.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455374/normal_5fec4c4fa1c48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453754/normal_5fc5cd6c46f4c.pdfIn PDF document text
    • https://cdn.sqhk.co/jesupasuzoku/hgibaqN/35411223903.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450338/normal_6009dfc17610f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/37625269331.pdfIn PDF document text
    • https://6f81cef9-66a2-447d-9e1d-4c0427ef15c5.filesusr.com/ugd/4d935e_7a45f2a7cd154eab9c04654a1bfa7a53.pdf?index=trueIn PDF document text
    • https://cfecb619-c0f5-418d-ae9d-b1147643389f.filesusr.com/ugd/4cd51e_5961ef8f324345baade745861900e174.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/33357124122.pdfIn PDF document text
    • http://manosotidokef.myartsonline.com/jakokofufi.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/48713788214.pdfIn PDF document text
    • http://sogoxutagejuno.atwebpages.com/personajes_principales_de_cazadores_de_sombras.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/sage_one_accounting_tutorial.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE862 5368 bytes
SHA-256: 8578daec0b2d0a47d5e38a50a816cbf2ab6a1fffa8c11b6605a37d089246d7ac
font_01_sfnt_off0000fa95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA95 10848 bytes
SHA-256: abad2715b129e451eceaa4192a7ae7a680457893e64247acc76bc0323f6cdba3